Có các hóa chất sau: Nước, dd NaCL, dd HCL, dd Na2CO3. Không dùng thêm hóa chất hãy phân biệt các dd trên ( dụng cụ cần thiết có đủ ).

viết văn tự sự về một kỉ niệm đáng nhớ với người thân ( kết hợp miêu tả và biểu cảm )

1.Minh looks (thin) than he did. 2.Mountains are (big) than hills. 3.School days are (happy) of my life. 4.Who is (good) ,Tom or Tim? 5.The air in the city is much (dirty) than that in the country. 6.The Mekong River is the (long) river in Vietnam. 7.My sister is (old) than I. 8.Nam is (short) than Ba. He is the (short) in his class. 9.Your house is (large) than my house. 10.It is the (modern) building in this city.

Giải giúp em với ạ cần gấp lắm luôn

4 viết những viẹc sẽ xảy ra cho các tình huống sau dùng từ gợi ý trong ngoặc để hoàn thành câu 1 It's 7.30 now . I have to be at work at 8o'clock, but the journey from have to the oj jice takes 45 minutes (belate) ->I going to be late 2 the troj light are red . The woman and her are at the zebracrossing (cross) -> They are going to visit them sunday 3 Snow is falling very heavy and wand is blowing hard (beasnow storn) ->There

I.put the verb in the correct form: 1.we let our sons (chat)....on the 2.they've got some workers(do) 3.peter gave up(play)...vd games 4.he'd like(fly)....an aeroplane 5.I enjoy(write)....picture postcards 6.do you know what(do)....if there's a fire in the shop? 7.avoi(make)....silly mistakes 8.my parents wanted me(be)....home at 11o'clock 9.i dream about(build)....a big house 10.i'm hoping(see)...lisa 11.i can't imagine Petter(go)....by bike 12.he agreed(buy)....a new car 13. the question is easy(answer)... 1 4.the man asked me how(get)....to the airport 15.i look forward to(see)...you at the weekend 16.are you thinking of(visit)....london? 17.i am used to (run)....in the park in the morning 18.the teacher expected sarah(study)....the night shift 20.my classroom needs(repaint)....

Tính bằng cách thuận tiện a) 159 . 59 .72 b) 25 . 44 . 9 c) 17 . 53 + 17 . 47 + 134 d) 19 . 32 + 19 . 63 - 197 e) 199 . 33 + 199 . 56 + 89 g) ( 219 . 219 + 291 . 181 ) . ( 1212 .13 - 12 .1313) Giúp tớ với

Mn giải giúp em với ạ. Em đang cần gấp ạ 😭

Bài 1 : Tìm ước chung lớn nhất của : a) 18 , 30 b) 18 , 30 , 20 c) 24 , 48 d) 24 , 48 , 36 e) 16 , 32 , 128 g) 42 , 30 h) 32 , 128 i ) 42 , 30 ,20

Mọi người ơi giúp mình làm vớiiiii